, Instituto de Ciencias Naturales, Universidad Nacional de Colombia, Apartado 7495, Bogotá D.C., Colombia

• Zootaxa Vol. 491 No. 1: 21 Apr. 2004 - Article
  A new species of Tracheliodes Morawitz (Hymenoptera: Crabronidae) from Colombia and a key to the Neotropical species
  Abstract
• Zootaxa Vol. 1958 No. 1: 8 Dec. 2008 - Article
  A new species of the ant genus Forelius (Formicidae: Dolichoderinae) from the dry forest of Colombia
  Abstract